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  5. May

Average Weather in May in Tesserete Switzerland

Daily low temperatures increase by 7°F, from 44°F to 51°F, rarely falling below 38°F or exceeding 57°F.

For reference, on July 26, the hottest day of the year, temperatures in Tesserete typically range from 58°F to 76°F, while on January 12, the coldest day of the year, they range from 25°F to 38°F.

Average High and Low Temperature in May

The daily average high (red line) and low (blue line) temperature, with 25th to 75th and 10th to 90th percentile bands. The thin dotted lines are the corresponding average perceived temperatures.

The figure below shows you a compact characterization of the hourly average temperatures for the quarter of the year centered on May. The horizontal axis is the day, the vertical axis is the hour of the day, and the color is the average temperature for that hour and day.

Average Hourly Temperature in May

Average Hourly Temperature in May in Tesserete18152229112233445566778899101011111212131314141515161617171818191920202121222223232424252526262727282829293030313112 AM4 AM8 AM12 PM4 PM8 PM12 AMAprJunvery coldcoldcoolcomfortable
The average hourly temperature, color coded into bands: frigid < 15°F < freezing < 32°F < very cold < 45°F < cold < 55°F < cool < 65°F < comfortable < 75°F < warm < 85°F < hot < 95°F < sweltering. The shaded overlays indicate night and civil twilight.

Hope, Canada (5,208 miles away) and Banner Elk, North Carolina, United States (4,521 miles) are the far-away foreign places with temperatures most similar to Tesserete (view comparison).

Clouds

The month of May in Tesserete experiences gradually decreasing cloud cover, with the percentage of time that the sky is overcast or mostly cloudy decreasing from 57% to 53%. The highest chance of overcast or mostly cloudy conditions is 58% on May 9.

The clearest day of the month is May 31, with clear, mostly clear, or partly cloudy conditions 47% of the time.

For reference, on May 8, the cloudiest day of the year, the chance of overcast or mostly cloudy conditions is 58%, while on July 21, the clearest day of the year, the chance of clear, mostly clear, or partly cloudy skies is 70%.

Cloud Cover Categories in May

Cloud Cover Categories in May in Tesserete1815222911223344556677889910101111121213131414151516161717181819192020212122222323242425252626272728282929303031310%100%10%90%20%80%30%70%40%60%50%50%60%40%70%30%80%20%90%10%100%0%AprJunJul 2170%Jul 2170%May 143%May 143%May 3147%May 3147%May 1144%May 1144%May 2145%May 2145%clearmostly clearpartly cloudymostly cloudyovercast
The percentage of time spent in each cloud cover band, categorized by the percentage of the sky covered by clouds: clear < 20% < mostly clear < 40% < partly cloudy < 60% < mostly cloudy < 80% < overcast.

Precipitation

A wet day is one with at least 0.04 inches of liquid or liquid-equivalent precipitation. In Tesserete, the chance of a wet day over the course of May is increasing, starting the month at 37% and ending it at 41%.

For reference, the year's highest daily chance of a wet day is 41% on May 26, and its lowest chance is 16% on February 9.

Probability of Precipitation in May

The percentage of days in which various types of precipitation are observed, excluding trace quantities: rain alone, snow alone, and mixed (both rain and snow fell in the same day).

Rainfall

To show variation within the month and not just the monthly total, we show the rainfall accumulated over a sliding 31-day period centered around each day.

The average sliding 31-day rainfall during May in Tesserete is essentially constant, remaining about 4.4 inches throughout, and rarely exceeding 8.3 inches or falling below 1.8 inches.

The highest average 31-day accumulation is 4.6 inches on May 19.

Average Monthly Rainfall in May

The average rainfall (solid line) accumulated over the course of a sliding 31-day period centered on the day in question, with 25th to 75th and 10th to 90th percentile bands. The thin dotted line is the corresponding average liquid-equivalent snowfall.

Sun

Over the course of May in Tesserete, the length of the day is rapidly increasing. From the start to the end of the month, the length of the day increases by 1 hour, 8 minutes, implying an average daily increase of 2 minutes, 16 seconds, and weekly increase of 15 minutes, 55 seconds.

The shortest day of the month is May 1, with 14 hours, 21 minutes of daylight and the longest day is May 31, with 15 hours, 30 minutes of daylight.

Hours of Daylight and Twilight in May

The number of hours during which the Sun is visible (black line). From bottom (most yellow) to top (most gray), the color bands indicate: full daylight, twilight (civil, nautical, and astronomical), and full night.

The latest sunrise of the month in Tesserete is 6:10 AM on May 1 and the earliest sunrise is 34 minutes earlier at 5:37 AM on May 31.

The earliest sunset is 8:32 PM on May 1 and the latest sunset is 35 minutes later at 9:06 PM on May 31.

Daylight saving time is observed in Tesserete during 2017, but it neither starts nor ends during May, so the entire month is in daylight saving time.

For reference, on June 21, the longest day of the year, the Sun rises at 5:33 AM and sets 15 hours, 46 minutes later, at 9:18 PM, while on December 21, the shortest day of the year, it rises at 8:03 AM and sets 8 hours, 38 minutes later, at 4:41 PM.

Sunrise & Sunset with Twilight in May

The solar day over the course of May. From bottom to top, the black lines are the previous solar midnight, sunrise, solar noon, sunset, and the next solar midnight. The day, twilights (civil, nautical, and astronomical), and night are indicated by the color bands from yellow to gray.

Humidity

We base the humidity comfort level on the dew point, as it determines whether perspiration will evaporate from the skin, thereby cooling the body. Lower dew points feel drier and higher dew points feel more humid. Unlike temperature, which typically varies significantly between night and day, dew point tends to change more slowly, so while the temperature may drop at night, a muggy day is typically followed by a muggy night.

The chance that a given day will be muggy in Tesserete is essentially constant during May, remaining around 0% throughout.

For reference, on July 27, the muggiest day of the year, there are muggy conditions 11% of the time, while on January 1, the least muggy day of the year, there are muggy conditions 0% of the time.

Humidity Comfort Levels in May

Humidity Comfort Levels in May in Tesserete1815222911223344556677889910101111121213131414151516161717181819192020212122222323242425252626272728282929303031310%10%20%30%40%50%60%70%80%90%100%AprJunMay 10%May 10%May 310%May 310%May 110%May 110%May 210%May 210%humidhumidcomfortablecomfortabledrydrymuggymuggy
The percentage of time spent at various humidity comfort levels, categorized by dew point: dry < 55°F < comfortable < 60°F < humid < 65°F < muggy < 70°F < oppressive < 75°F < miserable.

Wind

This section discusses the wide-area hourly average wind vector (speed and direction) at 10 meters above the ground. The wind experienced at any given location is highly dependent on local topography and other factors, and instantaneous wind speed and direction vary more widely than hourly averages.

The average hourly wind speed in Tesserete is essentially constant during May, remaining within 0.1 miles per hour of 4.3 miles per hour throughout.

For reference, on March 31, the windiest day of the year, the daily average wind speed is 4.6 miles per hour, while on October 20, the calmest day of the year, the daily average wind speed is 3.7 miles per hour.

Average Wind Speed in May

The average of mean hourly wind speeds (dark gray line), with 25th to 75th and 10th to 90th percentile bands.
The hourly average wind direction in Tesserete throughout May is predominantly from the south, with a peak proportion of 46% on May 25.

Wind Direction in May

Wind Direction in May in TessereteNS1815222911223344556677889910101111121213131414151516161717181819192020212122222323242425252626272728282929303031310%100%10%90%20%80%30%70%40%60%50%50%60%40%70%30%80%20%90%10%100%0%AprJunsouthnortheastwest
The percentage of hours in which the mean wind direction is from each of the four cardinal wind directions (north, east, south, and west), excluding hours in which the mean wind speed is less than 1 mph. The lightly tinted areas at the boundaries are the percentage of hours spent in the implied intermediate directions (northeast, southeast, southwest, and northwest).

Growing Season

Definitions of the growing season vary throughout the world, but for the purposes of this report, we define it as the longest continuous period of non-freezing temperatures (≥ 32°F) in the year (the calendar year in the Northern Hemisphere, or from July 1 until June 30 in the Southern Hemisphere).

The growing season in Tesserete typically lasts for 6.8 months (208 days), from around April 7 to around November 1, rarely starting before March 19 or after April 25, and rarely ending before October 13 or after November 18.

The month of May in Tesserete is very likely fully within the growing season, with the chance that a given day is in the growing season gradually increasing from 97% to 100% over the course of the month.

Time Spent in Various Temperature Bands and the Growing Season in May

Time Spent in Various Temperature Bands and the Growing Season in May in Tesseretegrowing season1815222911223344556677889910101111121213131414151516161717181819192020212122222323242425252626272728282929303031310%100%10%90%20%80%30%70%40%60%50%50%60%40%70%30%80%20%90%10%100%0%AprJun97%May 197%May 1100%May 31100%May 31100%May 11100%May 11100%May 21100%May 2150%Apr 750%Apr 7very coldcoldcoolcomfortablewarm
The percentage of time spent in various temperature bands: frigid < 15°F < freezing < 32°F < very cold < 45°F < cold < 55°F < cool < 65°F < comfortable < 75°F < warm < 85°F < hot < 95°F < sweltering. The black line is the percentage chance that a given day is within the growing season.

Growing degree days are a measure of yearly heat accumulation used to predict plant and animal development, and defined as the integral of warmth above a base temperature, discarding any excess above a maximum temperature. In this report, we use a base of 50°F and a cap of 86°F.

The average accumulated growing degree days in Tesserete are increasing during May, increasing by 205°F, from 115°F to 321°F, over the course of the month.

Growing Degree Days in May

The average growing degree days accumulated over the course of May, with 25th to 75th and 10th to 90th percentile bands.

Solar Energy

This section discusses the total daily incident shortwave solar energy reaching the surface of the ground over a wide area, taking full account of seasonal variations in the length of the day, the elevation of the Sun above the horizon, and absorption by clouds and other atmospheric constituents. Shortwave radiation includes visible light and ultraviolet radiation.

The average daily incident shortwave solar energy in Tesserete is gradually increasing during May, rising by 0.8 kWh, from 5.4 kWh to 6.3 kWh, over the course of the month.

Average Daily Incident Shortwave Solar Energy in May

The average daily shortwave solar energy reaching the ground per square meter (orange line), with 25th to 75th and 10th to 90th percentile bands.

Topography

For the purposes of this report, the geographical coordinates of Tesserete are 46.068 deg latitude, 8.965 deg longitude, and 2,116 ft elevation.

The topography within 2 miles of Tesserete contains extreme variations in elevation, with a maximum elevation change of 3,333 feet and an average elevation above sea level of 2,131 feet. Within 10 miles also contains extreme variations in elevation (6,640 feet). Within 50 miles also contains extreme variations in elevation (12,861 feet).

The area within 2 miles of Tesserete is covered by trees (71%) and artificial surfaces (23%), within 10 miles by trees (63%) and artificial surfaces (12%), and within 50 miles by trees (40%) and grassland (15%).

Data Sources

This report illustrates the typical weather in Tesserete year round, based on a statistical analysis of historical hourly weather reports and model reconstructions from January 1, 1980 to December 31, 2016.

Temperature and Dew Point

There are 2 weather stations near enough to contribute to our estimation of the temperature and dew point in Tesserete.

For each station, the records are corrected for the elevation difference between that station and Tesserete according to the International Standard Atmosphere , and by the relative change present in the MERRA-2 satellite-era reanalysis between the two locations.

The estimated value at Tesserete is computed as the weighted average of the individual contributions from each station, with weights proportional to the inverse of the distance between Tesserete and a given station.

The stations contributing to this reconstruction are: Lugano Airport (58%, 8 kilometers, southwest) and Locarno Airport (42%, 13 kilometers, northwest).

Other Data

All data relating to the Sun's position (e.g., sunrise and sunset) are computed using astronomical formulas from the book, Astronomical Tables of the Sun, Moon and Planets , by Jean Meeus.

All other weather data, including cloud cover, precipitation, wind speed and direction, and solar flux, come from NASA's MERRA-2 Modern-Era Retrospective Analysis . This reanalysis combines a variety of wide-area measurements in a state-of-the-art global meteorological model to reconstruct the hourly history of weather throughout the world on a 50-kilometer grid.

Land Use data comes from the Global Land Cover SHARE database , published by the Food and Agriculture Organization of the United Nations.

Elevation data comes from the Shuttle Radar Topography Mission (SRTM) , published by NASA's Jet Propulsion Laboratory.

Names, locations, and time zones of places and some airports come from the GeoNames Geographical Database .

Time zones for aiports and weather stations are provided by AskGeo.com .

Maps are © Esri, with data from National Geographic, Esri, DeLorme, NAVTEQ, UNEP-WCMC, USGS, NASA, ESA, METI, NRCAN, GEBCO, NOAA, and iPC.

Disclaimer

The information on this site is provided as is, without any assurances as to its accuracy or suitability for any purpose. Weather data is prone to errors, outages, and other defects. We assume no responsibility for any decisions made on the basis of the content presented on this site.

We draw particular cautious attention to our reliance on the MERRA-2 model-based reconstructions for a number of important data series. While having the tremendous advantages of temporal and spatial completeness, these reconstructions: (1) are based on computer models that may have model-based errors, (2) are coarsely sampled on a 50 km grid and are therefore unable to reconstruct the local variations of many microclimates, and (3) have particular difficulty with the weather in some coastal areas, especially small islands.

We further caution that our travel scores are only as good as the data that underpin them, that weather conditions at any given location and time are unpredictable and variable, and that the definition of the scores reflects a particular set of preferences that may not agree with those of any particular reader.